We analyze quantum state estimation for finite samples based on symmetry information. The used measurement concept compares an unknown qubit to a reference state. We describe explicitly an adaptive strategy, that enhances the estimation fidelity of these measurements.
@article{arxiv.0811.2360,
title = {Adaptive estimation of qubits by symmetry measurements},
author = {Christof J. Happ and Matthias Freyberger},
journal= {arXiv preprint arXiv:0811.2360},
year = {2009}
}
Comments
5 pages, 3 figures; Version 3 with minor corrections